Home / 765,230.40-1,147,845.60-647,132.40

Finding the Fourth Proportional to 765,230.40, 1,147,845.60 and 647,132.40

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Solution

The fourth proportional to 765,230.40, 1,147,845.60 and 647,132.40 is: 970,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,230.40 : 1,147,845.60 = 647,132.40 : x
  2. Step 2: Convert to fraction form
    765,230.40/1,147,845.60 = 647,132.40/x
  3. Step 3: Cross multiply
    765,230.40x = 1,147,845.60 × 647,132.40
  4. Step 4: Simplify right side
    765,230.40x = 742,808,077,957.44
  5. Step 5: Solve for x
    x = 742,808,077,957.44/765,230.40
  6. Step 6: Final answer
    x = 970,698.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.